/// <summary>
///
/// </summary>
/// <param name="element"></param>
/// <param name="evp"></param>
public override void Visit(Syntax.Expression element, EvaluationParam evp)
{
var a = new NCalc.Expression(element.formula).Evaluate();
result = new Result();
result.Value = a;
}
/// <summary>
///
/// </summary>
/// <param name="element"></param>
/// <param name="evp"></param>
public override void Visit(Declare element, EvaluationParam evp)
{
result = new Result();
if (evp.IsPropertyExist(element.Name))
{
result.Value = evp.GetValue(element.Name);
}
else
{
result.Value = element.Value;
}
}
/// <summary>
///
/// </summary>
/// <param name="element"></param>
/// <param name="evp"></param>
public override void Visit(SQuery element, EvaluationParam evp)
{
result = new Result();
dynamic c = evp;
if (evp.IsPropertyExist("connection") == true)
{
var d = c.connection;
var data = new Domain.QData.DataParser(d);
data.GetDatatable(element);
result.Value = data.Datatable;
}
}
/// <summary>
///
/// </summary>
/// <param name="element"></param>
/// <param name="evp"></param>
public override void Visit(IFStatement element, EvaluationParam evp)
{
NCalc.Expression e = new NCalc.Expression(element.Text);
e.EvaluateFunction += delegate(string name, FunctionArgs args)
{
if (name.ToLower() == "mod")
{
args.Result = (int)args.Parameters[0].Evaluate() % (int)args.Parameters[1].Evaluate();
}
};
var a = e.Evaluate();
result = new Result();
result.Value = a;
// throw new NotImplementedException();
}
/// <summary>
///
/// </summary>
/// <param name="element"></param>
/// <param name="evp"></param>
public override void Visit(Fun element, EvaluationParam evp)
{
if (element.Type == FunctionType.Avg)
{
if (element.GetSource() != null)
{
System.Data.DataTable dt = getRecord(element);
result = new Result();
result.Value = dt.Computing("", element.ActionField, AggregateFunctionE.Average);
}
}
else if (element.Type == FunctionType.Count)
{
if (element.GetSource() != null)
{
System.Data.DataTable dt = getRecord(element);
result = new Result();
result.Value = dt.Rows.Count;
}
}
else if (element.Type == FunctionType.UCount)
{
if (element.GetSource() != null)
{
System.Data.DataTable dt = getRecord(element);
result = new Result();
result.Value = dt.DefaultView.ToTable(true, element.ActionField).Rows.Count;
}
}
else if (element.Type == FunctionType.Min)
{
if (element.GetSource() != null)
{
DataTable dt = getRecord(element);
result = new Result();
result.Value = dt.Computing("", element.ActionField, AggregateFunctionE.Min);
}
}
else if (element.Type == FunctionType.Max)
{
if (element.GetSource() != null)
{
System.Data.DataTable dt = getRecord(element);
result = new Result();
result.Value = dt.Computing("", element.ActionField, AggregateFunctionE.Max);
}
}
else if (element.Type == FunctionType.Sum)
{
if (element.GetSource() != null)
{
System.Data.DataTable dt = getRecord(element);
result = new Result();
result.Value = dt.Computing("", element.ActionField, AggregateFunctionE.Sum);
}
}
else if (element.Type == FunctionType.Case)
{
var c = (Case)element;
System.Data.DataTable dt = getRecord(element);
result = new Result();
StringBuilder sb = new StringBuilder();
sb.Append("{0}");
foreach (CaseParam cp in c.Cases)
{
StringBuilder s = new StringBuilder();
s.AppendFormat("IIF([{0}] {1} '{2}','{3}','{4}')", c.FieldName, cp.Condition, cp.Value, cp.AliasValue, "{0}");
string sst = sb.ToString();
sb.Clear();
sb.AppendFormat(sst, s.ToString());
}
if (sb.ToString() != "")
{
string st = sb.ToString();
sb.Clear();
sb.AppendFormat(st, c.elseValue);
if (dt.Columns.Contains(c.NewFieldName) == false)
{
dt.Columns.Add(c.NewFieldName, typeof(string));
}
dt.Columns[c.NewFieldName].Expression = sb.ToString();
dt.AcceptChanges();
result.Value = dt;
}
}
else if (element.Type == FunctionType.Order)
{
var c = (Order)element;
System.Data.DataTable dt = getRecord(element);
result = new Result();
string s = "";
foreach (ParamFields p in c.Fields)
{
s = s + "," + p.FieldName + " " + p.Order;
}
if (s.StartsWith(","))
{
s = s.Substring(1);
}
DataView viewFI = new DataView(dt);
viewFI.Sort = s;
dt = viewFI.ToTable();
result.Value = dt;
}
else if (element.Type == FunctionType.Pivot)
{
var p = (Pivot)element;
System.Data.DataTable dt = (DataTable)element.GetSource();
List <string> row = new List <string>();
List <string> datafield = new List <string>();
List <AggregateFunctionE> dataagg = new List <AggregateFunctionE>();
List <string> colfield = new List <string>();
foreach (ParamFields d in p.RowArguments)
{
row.Add(d.FieldName);
}
foreach (ParamFields d in p.AggrArguments)
{
datafield.Add(d.FieldName);
dataagg.Add((AggregateFunctionE)d.Aggregate);
}
foreach (ParamFields d in p.ColumnArguments)
{
colfield.Add(d.FieldName);
}
dt = dt.PivotData(datafield, dataagg.ToList(), row.ToArray(), colfield.ToArray(), false, 0, null, null, false);
result = new Result();
result.Value = dt;
}
else if (element.Type == FunctionType.Mean)
{
if (element.GetSource() != null)
{
System.Data.DataTable dt = getRecord(element);
result = new Result();
result.Value = dt.Computing("", element.ActionField, AggregateFunctionE.Median);
}
}
else if (element.Type == FunctionType.Mode)
{
if (element.GetSource() != null)
{
System.Data.DataTable dt = getRecord(element);
result = new Result();
result.Value = dt.Computing("", element.ActionField, AggregateFunctionE.Mode);
}
}
else if (element.Type == FunctionType.Range)
{
}
else if (element.Type == FunctionType.Medium)
{
if (element.GetSource() != null)
{
System.Data.DataTable dt = getRecord(element);
result = new Result();
result.Value = dt.Computing("", element.ActionField, AggregateFunctionE.Median);
}
}
else if (element.Type == FunctionType.Merge)
{
}
else if (element.Type == FunctionType.Join)
{
}
else if (element.Type == FunctionType.Filter)
{
if (element.GetSource() != null)
{
System.Data.DataTable dt = (System.Data.DataTable)element.GetSource();
var flt = "1=1";
foreach (ParamFields pf in element.Arguments)
{
flt = flt + " AND " + pf.FieldName + " = " + pf.FieldValue;
}
dt.DefaultView.RowFilter = flt;
dt = dt.DefaultView.ToTable(true);
dt.DefaultView.RowFilter = "";
result = new Result();
result.Value = dt;
}
}
else if (element.Type == FunctionType.Calculate)
{
if (element.GetSource() != null)
{
System.Data.DataTable dt = (System.Data.DataTable)element.GetSource();
dt.Calculate(((Calculate)element).ColumnName, ((Calculate)element).formula);
result = new Result();
result.Value = dt;
}
}
else if (element.Type == FunctionType.Columnduplicate)
{
if (element.GetSource() != null)
{
System.Data.DataTable dt = (System.Data.DataTable)element.GetSource();
dt = dt.DuplicateColumn(((Duplicate)element).ColumnName, ((Duplicate)element).AliasColumnName);
result = new Result();
result.Value = dt;
}
}
else if (element.Type == FunctionType.Dateparse)
{
if (element.GetSource() != null)
{
System.Data.DataTable dt = (System.Data.DataTable)element.GetSource();
dt = dt.DateParse(((DateParse)element).ColumnName, ((DateParse)element).GetParse());
result = new Result();
result.Value = dt;
}
}
else if (element.Type == FunctionType.Columnspit)
{
if (element.GetSource() != null)
{
System.Data.DataTable dt = (System.Data.DataTable)element.GetSource();
dt = dt.Split(((Split)element).SplitColumn, ((Split)element).Spliter, ((Split)element).ColumnPrefix);
result = new Result();
result.Value = dt;
}
}
else if (element.Type == FunctionType.Replace)
{
if (element.GetSource() != null)
{
List <KeyValuePair <string, string> > kp = new List <KeyValuePair <string, string> >();
kp.Add(new KeyValuePair <string, string>(((Replace)element).FindString, ((Replace)element).ReplaceString));
System.Data.DataTable dt = (System.Data.DataTable)element.GetSource();
dt = dt.FindReplace(((Replace)element).ColumnName, kp, ((Replace)element).NewColumnName);
result = new Result();
result.Value = dt;
}
}
else if (element.Type == FunctionType.ChangeCase)
{
if (element.GetSource() != null)
{
System.Data.DataTable dt = (System.Data.DataTable)element.GetSource();
if ((((TextCase)element).CaseType == TextCaseType.UPPER))
{
dt = dt.UpperCase(((TextCase)element).ColumnName);
}
else if ((((TextCase)element).CaseType == TextCaseType.CAPITAL))
{
dt = dt.CapitalCase(((TextCase)element).ColumnName);
}
else if ((((TextCase)element).CaseType == TextCaseType.LOWER))
{
dt = dt.LowerCase(((TextCase)element).ColumnName);
}
else if ((((TextCase)element).CaseType == TextCaseType.TITLE))
{
dt = dt.TitleCase(((TextCase)element).ColumnName);
}
result = new Result();
result.Value = dt;
}
}
else if (element.Type == FunctionType.Trancate)
{
if (element.GetSource() != null)
{
System.Data.DataTable dt = (System.Data.DataTable)element.GetSource();
dt.Trancate(((Trancate)element).ColumnName, ((Trancate)element).TrancateIndex);
result = new Result();
result.Value = dt;
}
}
else if (element.Type == FunctionType.GetValue)
{
if (element.GetSource() != null)
{
System.Data.DataTable dt = (System.Data.DataTable)element.GetSource();
if (dt.Rows.Count > 0)
{
var name = ((Fun)element).Arguments[0].FieldName;
var s = dt.Rows[0][name.Trim()];
result = new Result();
result.Value = s;
}
else
{
result = new Result();
result.Value = "";
}
}
}
else if (element.Type == FunctionType.GetValues)
{
if (element.GetSource() != null)
{
System.Data.DataTable dt = (System.Data.DataTable)element.GetSource();
if (dt.Rows.Count > 0)
{
var name = ((Fun)element).Arguments[0].FieldName.Trim();
Type type = dt.Columns[name].DataType;
var selectedColumn = string.Join(",", dt.AsEnumerable().Select(s => s.Field <string>(name)).ToArray());
result = new Result();
result.Value = selectedColumn;
}
else
{
result = new Result();
result.Value = "";
}
}
else
{
result = new Result();
result.Value = "";
}
}
else if (element.Type == FunctionType.toString)
{
if (element.GetSource() != null)
{
}
}
}
/// <summary>
///
/// </summary>
/// <param name="element"></param>
/// <param name="evp"></param>
public override void Visit(Value element, EvaluationParam evp)
{
result = new Result();
result.Value = element.getValue();
}
/// <summary>
///
/// </summary>
/// <param name="element"></param>
/// <param name="evp"></param>
public override void Visit(SelectionStatement element, EvaluationParam evp)
{
throw new NotImplementedException();
}
public abstract void Visit(Syntax.SQuery element, EvaluationParam evp);
public abstract void Visit(Syntax.Value element, EvaluationParam evp);
public abstract void Visit(Syntax.Expression element, EvaluationParam evp);
public abstract void Visit(Syntax.SelectionStatement element, EvaluationParam evp);
public abstract void Visit(Syntax.IterativeStatement element, EvaluationParam evp);
public abstract void Accept(IVisitor visitor, EvaluationParam evp);
public QScriptStatement(string statements, EvaluationParam evp)
{
sourceCode = new Tech.QScript.Source.SourceCode(statements);
Result = new Result();
_evp = evp;
}
